fix: update dependencies

[zebateira]

This PR updates the project dependecies.

Unused packages removed:

• markdown-it-deflist: what it is = https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dl

Example:

Beast of Bodmin

A large feline inhabiting Bodmin Moor.

• markdown-it-footnote: just regular footnotes with a number linking to the bottom of the page with the note.
• markdown-it-task-lists: just like github shows them
  • do this
  • do that
• markdown-it-video: embedded videos
• tailwindcss-touch

I thought it would be ok to remove all of these since we have not used them so far. But let me know what you think @jessicaschilling, particularly the markdown plugins.

Package missing

Also added autoprefixer since we are requiring it directly but we don't have it in our package.json. I understand it is a direct dependency of stylelint, tailwaind and vuepress, but it doesn't hurt to have it there.

Partially addresses: #34

[jessicaschilling]

Thanks @zebateira - I'd suggest removing these on the basis that we can always add them back if someone needs them.

[cwaring]

the markdown plugins are not really a burden on build time and we should consider keeping those and encourage their use through guides (also standard across the docs atm). Especially embedded videos in posts because adding iframe snippets directly ends up really messy when it comes to styling.

[jessicaschilling]

Please disregard my previous comment; whatever @cwaring says is final directive.

[cwaring]

@vuepress/plugin-last-updated could potentially shave off many seconds from the build time on a big site if we can get away with not using it. This has to spawn a child process to check the file modified info on disk which can be slow with many pages. I'd nudge you to experiment with this first :)

[zebateira]

The last updated plugin is used for SEO here: https://github.com/ipfs/ipfs-blog/blob/main/src/.vuepress/config.js#L239
So I think we need to keep it.
I'll cancel this PR since there are no gains from it.